Adaptive power allocation for uplink non-orthogonal multiple access with semi-grant-free transmission

Zheng Yang, Peng Xu, Jamal Ahmed Hussein, Yi Wu, Zhiguo Ding, Pingzhi Fan

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

In this letter, an adaptive power allocation (APA) strategy is proposed for an uplink non-orthogonal multiple access (NOMA) with semi-grant-free (SGF) transmission, where one grant-based user (GBU) shares the same resource with other grant-free users (GFUs) using grant-based scheme and grant-free scheme, respectively. The proposed strategy is based on the fact that the quality of service for the GBU can be strictly guaranteed if its instantaneous data rate is larger than the target date rate. Compared to existing works, the derived analytical results for the proposed APA strategy in uplink NOMA-SGF networks show that the outage probability at a low signal-to-noise ratio for the GBU can be significantly reduced, and full diversity gain for the GFUs can be achieved. Finally, the accuracy of the theoretical results is validated using Monte Carlo simulations.

Original languageBritish English
Article number9119121
Pages (from-to)1725-1729
Number of pages5
JournalIEEE Wireless Communications Letters
Volume9
Issue number10
DOIs
StatePublished - Oct 2020

Keywords

  • adaptive power allocation
  • Non-orthogonal multiple access
  • outage probability
  • semi-grant-free transmission

Fingerprint

Dive into the research topics of 'Adaptive power allocation for uplink non-orthogonal multiple access with semi-grant-free transmission'. Together they form a unique fingerprint.

Cite this